Ok, so this question is a simple "solve for" question. So you know you have to get x alone on one side, and all the numbers on the other. So you start by combining the numbers on their correct sides. So -3/2 (24+6x)=9 would turn into -36 +6x = 9
Now you would add 36 to both sides, which would lead you to 6x=45. Now you're at your last step: divide both sides by 6! x=7.5
I hope this helped you out with your work! If you need any further explanations or any help with other questions, let me know and I will assist you!